Personal, but fun anecdote: my girlfriend works in marketing and kept away from ad blockers for a long time, partly due to professional sympathy, partly simply because she wanted to see the ads, since she has a professional interest in that sort of stuff.

She eventually caved about a year ago and installed ABP. No matter how interesting it was, nor how much she sympathized with the folks working in media agencies, browsing the web simply became completely impossible, especially over an occasionally flimsy 3G connection.

Simple ads are "collateral damage" in this case, but even those can be worth blocking, e.g. to protect against tracking.